Percussion-fuse



iR. CAREY, W. L. LUKENS AND L. N. D. MIXSELL.

L v PERCUSSION FUSE.

APPLICATION FILED AUG19. 1918.

Patented. Nov. 22, 1921,

spring of the cavity, the guard 22a is preferably elongated softhat, in its normal position, it isnearlyy or Vquite in contact with the primer' seat. -As soonas the bolts 23 have been withdrawn from'V the rear of the guard, .the guard is free to move rearward relatively to the hammer body, permitting the firing pin to strike the primer.

j In other respects the construction shown 1n we claim as new and ters Patent is: A

arranged firing pin xed toY ity comprising, a

Fig. 5 is lkethatshown in `Figs. l to `l inelusive.V i

Having thus described our invention what desireV to secure by Letfor projectiles, aY hammer comprisinga cylindricaly body, a centrally the body and an annular guard surroundingtheforward endy of the firingY cavity in Vthe hammer body to `protect or expose the point of the pin, in combination with abolt operating'in a radial opening in the yhammer body and normally .arranged in the rear of the guard to' hold it in protecting position, a fixed closure movable 'with said body for the outer end of said opening, said bolt being movable under the influence of centrifugal ,force to free the guard and permit it to expose the point of the pin. 2. In a fuse a firing device comprising a cylindrical hammerbody having an axially arranged V l. In.l an@ fuse nular guard in said opening and surrounding the firing pin, radially acting boltsarranged vin .radial cavities inl 'rear of the guard cavity, `and a casing surrounding and secured to the hammer bodyV and closing the outer ends of the bolt cavities, the forward end of the casing being 'turned inwardly across the guard cavity and adapted to vlimit the forward movement of the guard.Y

3. -In a fuseV structure the combination with a fuse body having acylindrical cavity therein, of Va Yprimer seat carrying aleentrally arrangedprimer closing the .forwardV end of the cavity, a movable member in said cavity having 'an-'outer cylindrical surface loosely fitting the inner surface of said cavhammer'body constituting part of said movable memberV carrying a centrallyV arranged firing pin and vprovided with a bore or opening in its 'forwardend surrounding said pin, a movable guard with a central bearino' surface looselysurround ing said pin an',

29a which has the function`V of rthe rspringQ'?, Fig. l.`V T o hold the hammer body Vvnormally at the rear pin and movable in ak firing pin, andY having an axial Vopening surrounding thelliring p1n,=an an:

vbore and longitudinally movable within Xed limits, cooperating means on said guard and member within Asaid bore limitv`ing the forward movement of saidguard to a position` around and protecting'the point 70 'of said kpin and centrifugally releasable locking means within said movable member for normally holding said guard in its forwardvprotecting position. .v

i il. As an articleof manufacture a ring'75 device adaptedfor use in the cylindrical cavity of a fuse body having an outer cylindrif cal surface adapted to loosely fit in said cavity andto move longitudinally therein,

' ,comprising a cylindrical hammerk body hav- 80 ing a central opening or bore in one end, a firing pin secured to saidbody centrally of said bore' and projecting at its forward end Abeyondlthe forward end of said body, a

guard surrounding said pin and freely mov- 4ablethereo'n between fixed limits within-said 1 bore, f andy adapted to project therefrom around the point of the pin and automatic centrifugally releasable means around said pin at the inner endof said guard inclosed within said member to holdfsaid guard in Vits forward position.

5. An article of manufacture of the class `described comprising a hammer body having an outer surface cylindrical in form and f provided with a centrally arranged cavity .extending longitudinally from the forward end toward the rear end and with radial openings at the rear vend of said cavity, a firing pin extending centrally from the bot- 1: tom of said cavity to a point beyond the forward end of said hammer body, a guard" surrounding and freely movable on/Jsaid pin longitudinally in said cavity. Vwith its forward end normally at least as far forward as the tip end of said pin, cooperating peripheral abutments on said guard and on said hammer member within said cavity to limit the forward movement of said guard, spring pressed bolts in said radial openings bearing against said pin behind the inner endof said guard andnormally holding it in its foremost position.

6. An article of manufacture of the class described comprising a hammer body having an outer surface` YcylindricalY in form and provided with a centrally arranged cavity extending longitudinally from the forward :.endtoward the rear end and withvradial openings at the rear end of said cavity, a firing pin eXtending'centrally fromthe bottom of said cavity tof a pointt beyond the forward end of said hammer', body, a guard surrounding and freely movable on said'pin longitudinally in said cavity with its forward 125 Vend normallyY at least as far forward as the `tip Vend of said pin, spring pressed bolts in said lradial openings bearing against said pin behind the inner end of said guard and fitting partly within saidV normally` holding it in its forward position,

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